<header id="header">
    <nav class="navbar navbar-default" role="navigation">
        <div class="container-fluid header_container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse"
                    data-target="#example-navbar-collapse">
                    <span class="sr-only">切换导航</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand" href="#">Photo Share 管理员模式</a>
            </div>

            <div class="pc_hidden_mobile_show collapse navbar-collapse navbar-right" id="example-navbar-collapse">
                <ul class="nav navbar-nav">
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <span class="glyphicon glyphicon-wrench"></span>
                            Setting <b class="caret"></b>
                        </a>
                        <ul class="dropdown-menu" style="text-align: center">
                            <li>
                                <a id="add_user" href="#" title="添加管理员用户|管理员数量上限为3">添加用户</a>
                            </li>
                            <li>
                                <a id="change_pass" href="#" title="修改登录的管理员用户的密码">修改密码</a>
                            </li>
                        </ul>
                    </li>
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <span class="glyphicon glyphicon-bell"></span>
                            Information <b class="caret"></b>
                        </a>
                        <ul class="dropdown-menu" style="text-align: center">
                            <li>
                                <a id="img_info" href="#" title="查看图片变化数据">图片信息</a>
                            </li>
                            <li>
                                <a id="user_data" href="#" title="查看网站用户的变化">用户数据</a>
                            </li>
                        </ul>
                    </li>
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                            <span class="glyphicon glyphicon-user"></span>
                            User <b class="caret"></b>
                        </a>
                        <ul class="dropdown-menu" style="text-align: center">
                            <li><a id="change_acct" href="#">切换账户</a></li>
                            <li class="divider"></li>
                            <li><a id="change_pass" href="#">修改密码</a></li>
                            <li><button type="button" class="btn btn-danger navbar-btn"><a
                                        href="/admin/exit">退出登录</a> </button></li>
                        </ul>
                    </li>
                </ul>
            </div>
        </div>
    </nav>
</header>

<header id="headerPC">
    <nav class="navbar navbar-fixed-top navbar-transparen" role="navigation">
        <div class="container-fluid header_container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse"
                    data-target="#example-navbar-collapse">
                    <span class="glyphicon glyphicon-align-justify"></span>
                    <span class="sr-only">切换导航</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand" href="/admin"><span class="glyphicon glyphicon-home"></span> Photo
                    Share|管理员</a>
            </div>
            <span id="time"></span>
        </div>
    </nav>
</header>